Innovation, Style and a New Mobile Experience Coming to T-Mobile

BELLEVUE, Wash. - September 5, 2013 - Are you ready for the next big thing? T-Mobile US, Inc. (NYSE: TMUS) will launch Samsung's first wearable experience, Galaxy Gear(TM), and the Samsung Galaxy Note® 3 nationwide October 2. Paired with the Galaxy Note 3, Samsung's Galaxy Gear smartwatch introduces an entirely new type of mobile experience by intelligently connecting and sharing everyday moments with quick glance notifications, hands-free calling, music control and an array of innovative features.

"The next generation of Samsung Galaxy products are pushing the boundaries of mobile innovation and how people manage and enjoy their lives," said Jason Young, vice president of product marketing for T-Mobile US. "T-Mobile is pushing boundaries too. Only America's Un-carrier offers the latest Samsung innovation with the boldest offers in wireless - no annual service contracts, unlimited data on a nationwide 4G network and the freedom to upgrade affordably when you want, not when you're told with JUMP!(TM)"

Pairing a dramatically simple unlimited plan with premium Galaxy devices isn't anything without a blazing fast network. T-Mobile is delivering 4G LTE at a breakneck pace - reaching 167 million people across the U.S. in 116 metropolitan areas as of early-August. The company continues to make rapid progress towards its goal of reaching 200 million people by the end of the year.

The Galaxy Note 3 will be available for $199.99 down with 24 equal monthly device payments of $21.00[1] with T-Mobile's Simple Choice Plan and Samsung's Galaxy Gear will cost $299.99 (plus taxes and fees). To be the first to know when T-Mobile will start taking orders online for the Galaxy Note 3, customers can sign up for alerts at https://explore.t-mobile.com/samsung-galaxy-note-3. Those who register before September 15 will automatically be entered into a sweepstakes for a chance to win a free Galaxy Note 3 and a companion Galaxy Gear[2].

Samsung, Galaxy, Galaxy Note, Galaxy S, Super AMOLED, and S Voice are all trademarks of Samsung Electronics Co., Ltd. Other company names, product names and marks mentioned herein are the property of their respective owners and may be trademarks or registered trademarks.

About T-Mobile US, Inc.: As America's Un-carrier, T-Mobile US, Inc. (NYSE: "TMUS") is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The company's advanced nationwide 4G and 4G LTE network delivers outstanding wireless experiences for customers who are unwilling to compromise on quality and value. Based in Bellevue, Wash., T-Mobile US operates its flagship brands, T-Mobile and MetroPCS. It currently serves approximately 44 million wireless subscribers and provides products and services through 70,000 points of distribution. For more information, please visit: http://www.t-mobile.com.

Forward-Looking Statements:This press release includes "forward-looking statements" within the meaning of the U.S. federal securities laws. Any statements made herein that are not statements of historical fact, including statements about T-Mobile US, Inc.'s plans, strategy, expected network modernization and other advancements, are forward-looking statements. Generally, forward-looking statements may be identified by words such as "anticipate," "expect," "suggests," "plan," "believe," "intend," "estimates," "targets," "views," "may," "will," "forecast," and other similar expressions. The forward-looking statements speak only as of the date made, are based on current assumptions and expectations, and involve a number of risks and uncertainties. Important factors that could affect future results and cause those results to differ materially from those expressed in the forward-looking statements include, among others, the following: our ability to compete in the highly competitive U.S. wireless telecommunications industry; adverse conditions in the U.S. and international economies and markets; our significant capital commitments and the capital expenditures required to effect our business plan; our ability to adapt to future changes in technology, enhance existing offerings, and introduce new offerings to address customers' changing demands; changes in legal and regulatory requirements, including any change or increase in restrictions on our ability to operate our network; our ability to successfully maintain and improve our network, and the possibility of incurring additional costs in doing so; major equipment failures; severe weather conditions or other force majeure events; and other risks described in our filings with the Securities and Exchange Commission, including those described in our Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 8, 2013. You should not place undue reliance on these forward-looking statements. We do not undertake to update forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

About Samsung Electronics Co., Ltd.Samsung Electronics Co., Ltd. is a global leader in technology, opening new possibilities for people everywhere. Through relentless innovation and discovery, we are transforming the worlds of televisions, smartphones, personal computers, printers, cameras, home appliances, LTE systems, medical devices, semiconductors and LED solutions. We employ 236,000 people across 79 countries with annual sales of US$187.8 billion. To discover more, please visit www.samsung.com.

[1] If you cancel wireless service, remaining balance on phone becomes due. Financing is available on approval of credit online and in participating locations. 0% APR O.A.C. for well-qualified customers. Not available in the District of Columbia.[2] No purchase necessary to enter to win. Winners will be notified by September 20, 2013. See complete Samsung Galaxy Note 3 preregistration sweepstakes rules at www.samsung.com/tmobilepromo/rules.

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